He had more of a fight on his hands in race two, Natzke eventually fighting through traffic to finish second, less than four seconds behind the winner, visiting Australian Kyle Webster.
Natzke suffered a poor start in race three and had his work cut out to power through traffic from a long way back in the field. Natzke battled to fifth position by race end and, although frustrated by this result, he was grateful to leave Rotorua with his points lead intact, actually boosted a fraction, and he was happy to still be in possession of the championship leader's red number plate.
Holding the red plate can be a huge confidence boost for the rider who holds it, a badge of honour, and Natzke is determined to keep a firm grip on it during round three at the Hawke's Bay Motorcyle Club's Fernhill track at Mere Rd. Taupo will host round four on March 15.
"The first two races (at Rotorua on Sunday) were really good, but the last race was a missed opportunity for me," Natzke said afterwards.
"I had a terrible start. I'm still moving forward in the championship chase, but I'm frustrated. I wanted to do better, of course.
"I'm happy to still be leading the championship and I'm looking forward to Hawke's Bay. I want to come away with enough points after Fernhill that I can take a good safety buffer with me, perhaps have a race under my belt, heading into the final round."
If he does hold it all together and wrap up the MX2 motocross title at the fourth and final round at Taupo, it will be a treasured "book-end" for the New Zealand Supercross Championships title trophy Natzke won last November.
Hawke's Bay race fans may be on the look-out for Hastings rider Jye Deacon to perform at Fernhill on Sunday. The Honda rider did not race at round one, but he managed an impressive 14th overall in the 35-rider MX2 class at Rotorua.
Meanwhile, in the MX1 class, Bay of Plenty's defending champion Cooper will need to bring his A game to the track at Fernhill, as Australian visitor Kirk Gibbs nibbled into his points lead at Rotorua, while it may take an absolute disaster for Connolly not to secure his first senior 125cc class title this year as he enjoyed his fifth win from six starts at Rotorua.